Amorphous Ribbon
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Study on Magnetic Behavior of Nd8Fe84Ti2B6 Nanocomposite by FORC Diagram
Systematic investigation was made on the magnetic property of a series of Nd2Fe14B/α-Fe nanocomposites prepared by crystallization of amorphous Nd8Fe84Ti2B6 ribbon at annealing temperatures in the range of 800-860 °C. Both remanence and energy product increase with increasing annealing temperature, reaching the maximum values at 850 °C. Coercivity remains
Mat. Res.. Publicado em: 04/12/2015
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2. Syntheses and Fundamental Properties of Fe-rich Metastable Phase Alloys with Saturation Magnetization Exceeding 1.9 T
A melt-spun Fe90Si5B5 alloy ribbon consists of bcc-Fe(Si) + Fe3B + amorphous phase and exhibits good bending ductility, high tensile fracture strength above 1000 MPa, high corrosion resistance and unique magnetic properties as exemplified for high saturation magnetization exceeding 1.9 T, moderately high initial permeability of about 150 and low coercivity o
Mat. Res.. Publicado em: 23/10/2015
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3. Synthesis of Cu xO(x = 1,2)/amorphous compounds by dealloying and spontaneous oxidation method
Cu xO(x = 1,2)/amorphous compounds have been successfully synthesized by chemical free dealloying and spontaneous oxidation method. Technological parameters, such as the acid concentration and dealloying time strongly influence the crystal type, size and morphology of coppery oxide. The further study shows that with the increase of HCl concentration, the sur
Mat. Res.. Publicado em: 24/09/2013
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4. Evaluation of chemical dispersants and pre-treatment in the determination of clay in soils of different mineralogy / Avaliação de dispersantes químicos e pré-tratamentos na determinação de argila de solos de mineralogias distintas
The knowledge about the physical properties of soil, including the levels of clay is of paramount importance to the environment and for agriculture. Soil apparently equal may have different behavior because of inherent characteristics, determined by the performance of different procedures for training and the nature of their material trainer. The objectives
Publicado em: 2008
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5. Efeito hall planar e magnetoimpedÃncia gigante em liga ferromagnÃtica amorfa Co75Fe5Si15B10
We developed a melt-spinning to produce metallic ribbons. The system is essentially made of a radio frequency oven generating 8 kVA of 450 kHz was used to melt the compound, and a cupper used to cool down the melting
Publicado em: 2006
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6. Influencia das anisotropias magneticas nos processos de magnetização de ligas amorfas
Measurements of initial magnetic susceptibility and initial magnetic permeability aftereffect were performed in a set of amorphous metallic ribbons of nominal composition FexCo75-xSi15B10 (2 £ x £ 40). The observed behaviors for the susceptibility curves as a function of the external agents applied in the samples (tensile stresses, DC magnetic field, therm
Publicado em: 1992
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7. Anisotropias induzidas em ligas ferromagnéticas amorfas / Induced anisotropy in amorphous ferromagnetic alloys
In this thesis we will present a series of studies related to induced magnetic anisotropies (Kind) in amorphous alloys. In order to get a more general view of this theme, we used several different kinds of annealings. The theoretical analysis of the data of Kind and magnetic after-effect (MAE) was performed using a model based on two-level systems (TLS). Fro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/03/1991
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8. Clostridium Spores with Ribbon-like Appendages
Spores of Clostridium sp. N1 are characterized by numerous broad ribbon-like appendages attached to one end. The appendages are two to three times the length of the spore and, at their maximal dimension, may be two-thirds the width of the spore. They are attached to the spore body by a common trunk which is continuous with the outer spore coat. Each appendag
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9. Effect of Polymyxin on the Bacteriophage Receptors of the Cell Walls of Gram-Negative Bacteria
Treatment of gram-negative bacteria with lethal doses of polymyxin B and colistin resulted in the formation of projections of the outer layer of the cell wall. Phages T3, T4, and T7, which use wall lipopolysaccharide as receptors, were specifically prevented from adsorbing to Escherichia coli B cells treated with polymyxin, whereas phages T1, T2, T5, and T6